#521F17
Closest named color: Chocolate Brown (#411900). oklch(31.4% 0.078 31), rgb(82, 31, 23).
Aa
White text reads best on this color (13.40:1).
About this color
#521F17 is a dark, moderately saturated red. In OKLCH its lightness is 31%, its chroma 0.078 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Chocolate Brown (#411900), ΔE 0.051 away. White text reads best on it, at 13.40:1.
| Hue family | Reds |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.078) |
| Temperature | warm |
| Nearest name | Chocolate Brown (#411900) |
| Black text | 1.56:1 |
| White text | 13.40:1 |
Values
| HEX | #521F17 |
| RGB | rgb(82, 31, 23) |
| HSL | hsl(8, 56%, 21%) |
| OKLCH | oklch(31.4% 0.078 31) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #521F17 | 13.40:1 | AAA | Lc -102.6 | Preferred for body text |
| Black text on #521F17 | 1.56:1 | Fails | Lc 0.0 | Not readable |
| #521F17 text on white | 13.40:1 | AAA | Lc 99.4 | Preferred for body text |
| #521F17 text on black | 1.56:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#FEF3F0
oklch(97.2% 0.013 35.7)
-
Step 100
100
#FBE4DF
oklch(93.6% 0.026 32.2)
-
Step 200
200
#F9CDC5
oklch(88.4% 0.051 30.1)
-
Step 300
300
#F7AA9C
oklch(80.9% 0.094 30.6)
-
Step 400
400
#EF7965
oklch(70.7% 0.149 31.1)
-
Step 500
500
#E54F3A
oklch(63.1% 0.19 30.9)
-
Step 600
600
#D12711
oklch(55.6% 0.207 30.9)
-
Step 700
700
#B41600
oklch(49.1% 0.191 31)
-
Step 800
800
#921808
oklch(42.7% 0.159 31)
-
Step 900
900
#751E12
oklch(37.7% 0.123 31.1)
-
Step 950
950 (this color)
#521F17
oklch(31.4% 0.078 31)
#521F17 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #2C2816 | 0.081 |
| Deuteranopia (no green cones) | #393316 | 0.074 |
| Tritanopia (no blue cones) | #5A151D | 0.029 |
| Achromatopsia (no color) | #2F2F2F | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #521F17
#521F17
oklch(31.4% 0.078 31)
- #003841
#003841
oklch(31.3% 0.055 212.1)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #521F17, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chocolate Brown #411900 ΔE 0.051
- Claret #680018 ΔE 0.059
- Burgundy #610023 ΔE 0.060
- Reddy Brown #6E1005 ΔE 0.061
- Mahogany #4A0100 ΔE 0.062
- Dark Brown #341C02 ΔE 0.075
- Deep Brown #410200 ΔE 0.077
- Blood #770001 ΔE 0.081
Use #521F17 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.